Chair



FIG. 1 is a front view of a chair, showing my new design;

FIG. 2 is a front and right side perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a top view thereof.

I claim the ornamental design for a chair, as shown and described.